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| a sequence of changing states that produces a final state identical to the original one; one of a succession of periodically recurring events |
| the branch of physics that deals with sound and sound waves |
isotone i·so·tone (ī'sə-tōn')
n.
One of two or more atoms whose nuclei have the same number of neutrons but different numbers of protons.
isotone
any of two or more species of atoms or nuclei that have the same number of neutrons. Thus, chlorine-37 and potassium-39 are isotones, because the nucleus of this species of chlorine consists of 17 protons and 20 neutrons, whereas the nucleus of this species of potassium contains 19 protons and 20 neutrons.
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